Composition of matter.



' U' rrnn srnrrns Parana @FFEQE. r

' ninety per cent. lead, ten per cent. antimony.

HENRY w. woarcnEmnnALrn/ioan"naarmnn.

comrosrrron or MATTER.-

N'o. 887,173. specificationof Letters'Patent. Patented May 12, 1908. Application filed January 3, 1908. Serial No. 09,236.

- To all whom it may concern: composition possessing suchhigh resistance I Be it known that I, HENRY W. WORTCHE, qualities, is admirably adapted for a great a citizen of the United States, residing at variety of purposes and particularly for that Baltimore city, and State of Maryland, have of valve construction, conveying supere invented certain new and useful lmproveheated steam under high pressure and tem ments in Composition of Matter, ofwhich peratures' that are employedin modern inthe following is a s ecification. dustries.

My invention re ates to a composition of The high pressure and accompanying high matter whichis capable Of'fXiJGIlSlVG use for temperatures under which steam is ema great variety of purposes in many different ployed for modern industrial purposes have arts. The primary object being however, rendered comparatively useless elastic valve to provide valve disks, seatsor packings 1n compositions, such as vulcanized rubber their nature somewhat elastic, and which compositions, such compositions burning will be indestructible upon contact of steam away or otherwise deteriorating after having of any kind, oils, hot and cold water and the been in use but a short time. This has like, and other fluids of'a destructive nature. l resulted in the renouncing by the trade of I prefer to use the following formula: l elastic compositions of theclass referred to for valve construction, particularly valve The lead used in my composition is of the disks, and the substitution therefor of metal, ordinary kind, having a specific gravity of such as copper and bronze, which however, about 11.36 and an atomic weight of about are unable to prevent the leakageof fluids 205.35; the antimony may be either amorunder high pressures or temperatures, or

phous or crystalline, and ordinarily has a both.

specific gravity of 6.7 and an atomic weight Having fully described my invention, of about 120. At this gravity and weight the What I claim as new, and desire to secure by antimony is easily fused with the lead. Letters Patent, is:

For the purpose of obtainin a hard com- 1. A valve seat composed of an alloy conosition, for indestructible pac ring, and the taining lead and antimony, substantially as ike, to withstand the contact of steam, oils, described.

acids, alkalies, and which will effectively v2. A valve seat composed of an alloy conresist the passage of fluids under high res taining ninety per cent.lead and ten per cent. sure, and will successfully withstand or a antimony, substantially as described.

long period of time the action of such fluids, In testimony whereof I aflix my signature even though the temperature thereof may be in presence of two witnesses.

high, that. will be impervious to the attacks HENRY W. WORTCHE. of the acids and alkalies, I have found it Witnesses; more advantageous to use eighty per cent. 1 E. WALTON BREWINGTON, lead and twenty per cent. antimony. A l MARY M. MAGRAW. 

